Axial fan



FIG. 1 is a perspective view of the top, front and left side of an axial fan showing my new design;

FIG. 2 is a perspective view of the top, rear and left side thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom view thereof; and,

FIG. 9 is a cross sectional view at 9-9 of FIG. 3 thereof.

The portions of the article in broken lines are shown for illustrative purposes only and form no part of the claimed design. 

The ornamental design for an axial fan, as shown and described. 